Conference Papers

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Author: search.filters.author.Sabhahit, N.S.

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    Performance study of isolated hybrid power system with multiple generation and energy storage units
    (2011) Sabhahit, N.S.; Gaonkar, D.N.
    This paper presents proportional-plus-integral (PI) controller based frequency regulation of isolated autonomous hybrid distributed generation system for sudden variation in load demand and wind. The developed hybrid system comprises of wind turbine generator (WTG), micro-turbine generator (MTG), fuel cell (FC), an aqua electrolyzer (AE) along with the energy storage device such as battery energy storage system (BESS). Further ultracapacitor (UC) as an alternative energy storage element is incorporated into the system for better performance. The generated hydrogen by an aqua electrolyzer is used as fuel for a fuel cell. The simulation results reported in the paper focused on frequency response for variable wind power, step load change and variable load. © 2011 IEEE.
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    Dynamic modeling and analysis of an isolated self excited induction generator driven by a wind turbine
    (2012) Sabhahit, N.S.; Gaonkar, D.N.
    This paper presents modeling, simulation and transient analysis of three phase self-excited induction generator (SEIG) driven by a wind turbine. Three phase self-excited induction generator is driven by a variable-speed prime mover such as a wind turbine for the clean alternative renewable energy in rural areas. Transients of machine self-excitation under three phase balanced load conditions are simulated using a Matlab/Simulink block diagram for constant, step change in wind speed and random variation in wind speed. © 2012 IEEE.
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    Dynamic modeling and performance analysis of grid connected PMSG based variable speed wind turbines with simple power conditioning system
    (2012) Sabhahit, N.S.; Gaonkar, D.N.; Kumar, K.S.K.
    This paper presents modeling, simulation and performance analysis of grid connected wind generation system using direct-driven Permanent Magnet Synchronous Generator (PMSG). The proposed system includes a wind turbine (WT), a permanent magnet synchronous generator, a three-phase diode rectifier bridge, a dc bus with a capacitor and a current regulated PWM voltage source inverter. In this paper complete modeling of wind power generation system with PMSG and power electronic converter interface along with the control scheme is developed using a Matlab/Simulink simulation package. The performance of the developed model is studied for different wind speeds and load conditions. Simulation results show that the controllers can regulate the DC link voltage, active and reactive power produced by the wind power generation system. © 2012 IEEE.
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    Performance study of roof top wind solar microgrid system in isolated mode of operation
    (Institute of Electrical and Electronics Engineers Inc., 2014) Gaonkar, D.N.; Sabhahit, N.S.; Raghavendra, P.
    The increasing interconnection of distributed generation sources of diverse technologies to low voltage grids introduces considerable complexity in its operation and control. The concept of the microgrid is emerging as a solution to this and also to take full advantage of the potential offered by distributed generation resources. In this paper the performance study of a roof top wind solar hybrid microgrid in isolated mode of operation has been presented. The developed 10 kW microgrid consists of two wind turbine of 3.2 kW each and a PV system of 3.6 kW peak. The microgrid is interfaced to the load through a voltage source inverter. The performance of wind system in the developed microgrid has been investigated under different input conditions and practical results have been reported in this paper. © 2014 IEEE.
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    Battery-ultracapacitor storage devices to mitigate power fluctuations for grid connected PV system
    (Institute of Electrical and Electronics Engineers Inc., 2016) Sabhahit, N.S.; Gaonkar, D.N.; Jhunjhunwala, J.V.; Karthik, R.P.
    This paper presents a control strategy based on energy storage systems to minimize the output power fluctuations for a PV system. Solar energy is naturally intermittent with stochastic fluctuations, by virtue of which, stability and power quality of grid operation are affected. This makes grid integration of PV system cumbersome. The aim of this study is to develop a control strategy to deliver smoothened power to the grid, using battery and ultracapacitors for a grid connected hybrid system. The fluctuating power is absorbed by a battery and ultracapacitors during erratic solar power variation, thus being able to mitigate the power fluctuations to the grid. Bidirectional converters are used in tandem with a battery and ultracapacitors to ensure active energy flow between the grid and the storage systems. The inverter control strategy is implemented such that it will maintain a constant DC link voltage. The PV power system is controlled to extract maximum power. Dynamic modeling and simulation study are accomplished using MATLAB/Simulink. © 2015 IEEE.